How does this text contrast worldly relationships with the spiritual path to liberation?

Chapter 45 draws a sharp contrast between worldly relationships and the pursuit of the ultimate spiritual goal. It states that family members—such as in-laws, sons-in-law, a wife, or even one's own parents and children—cannot be fully relied upon as companions for spiritual achievement. The text suggests their motivations are tied to worldly concerns: a mother and father show affection, a son looks at the wealth he can inherit, and a wife mourns for her own status. It concludes that these figures will not help with one's spiritual goal and that, upon final reflection, only one's own self remains as the instrument through which liberation can be achieved, guided by the Guru.